Honeycomb structure
First Claim
1. A honeycomb structure which is formed by a plurality of cells separated from one another by porous partition walls and functioning as fluid flow paths, the honeycomb structure comprising:
- a sensor plug-in hole which is formed in an outer peripheral surface of the honeycomb structure and into which a sensor can be plugged, the sensor plug-in hole penetrating one or more passages; and
at least one deep hole which communicates with the sensor plug-in hole and penetrates a greater number of passages than the sensor plug-in hole.
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Accused Products
Abstract
A precise exhaust gas control can be achieved without being influenced by fluctuations of the excess air ratio (λ) between cylinders of engines or the size of the diameter (the sectional area) of the honeycomb structure. The honeycomb structure is formed by a plurality of cells separated from one another by porous partition walls and functioning as fluid flow paths, the honeycomb structure includes: a sensor plug-in hole 7 which is formed in an outer peripheral surface 4 of the honeycomb structure and into which a sensor can be plugged, and the sensor plug-in hole 7 is provided with at least one deep hole 8 which communicates with the sensor plug-in hole.
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Citations
13 Claims
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1. A honeycomb structure which is formed by a plurality of cells separated from one another by porous partition walls and functioning as fluid flow paths, the honeycomb structure comprising:
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a sensor plug-in hole which is formed in an outer peripheral surface of the honeycomb structure and into which a sensor can be plugged, the sensor plug-in hole penetrating one or more passages; and at least one deep hole which communicates with the sensor plug-in hole and penetrates a greater number of passages than the sensor plug-in hole. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification